Notify birthdays 6 hours later, so that Americans whine less.

DeukBot4/Database/BirthdayHandler.cs

@@ -83,7 +83,7 @@ namespace DeukBot4.Database
         // ReSharper disable once FunctionRecursiveOnAllPaths
         public static async Task CheckBirthdays()
         {
-            var today = DateTime.UtcNow.Date;
+            var today = DateTime.UtcNow.Date - new TimeSpan(6, 0 , 0);
             while (!Program.IsConnected)
             {
                 await Task.Delay(500);